This is a very interesting thread, especially considering my family's Irish heritage. I had always wondered why I don't "look" Irish (dark hair, brown eyes, tan skin). Iberians settling in southern Ireland would very much explain that (where I can best figure the largest number of the Gallagher surname originate). Now if I can just figure out where the size of men in my family comes into play (tall and broad). I had read somewhere about Viking settlements in that same region of Ireland, which would make sense, considering my oily skin (believed to be a trait of ancient peoples in cold climates). Given the name Gallagher dates back to people who were known as friendly to foreigners...

Anyway, I'm pulling this way off topic. My apologies.